KR19980082536A - Pre-opening device of the cartridge shutter - Google Patents

Abstract

The present invention relates to a pre-opening device of a cartridge shutter in which the opening time of the cartridge shutter is completed before the clamper and the spindle motor when the cartridge on which the optical disc is mounted is loaded.

A cartridge shutter pre-opening device according to the present invention comprises a cartridge having a spindle motor for rotating the optical disk, a clamper for seating the optical disk on the spindle motor, a shutter for mounting the optical disk and horizontally moving to open the information recording surface of the optical disk; And shutter pre-opening means for opening the shutter prior to the clamper and spindle motor.

The pre-opening device of the cartridge shutter according to the present invention is achieved by reducing the separation distance between the spindle motor and the clamper to be less than the height of the side wall of the shutter by completing the shutter opening completion point of the cartridge before the center of the spindle motor and the clamper. The space utilization of peripheral parts can be increased.

Description

Pre-opening device of the cartridge shutter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk driver, and more particularly, to a pre-opening apparatus of a cartridge shutter in which an opening timing of the cartridge shutter is completed before the clamper and the spindle motor when the cartridge is loaded with the optical disk.

Optical discs can only be played back, for example, if they have relatively physically safe information recording surfaces such as compact disk-ROMs and digital versatile disk-ROMs (DVD-ROMs). mount and load the disk;

In the case of a rewritable recording medium, that is, a compact disk-recordable (CD-R) and a digital versatile disk-RAM (DVD-RAM), the cartridge has a relatively weak recording surface. Loading is a common trend.

In this case, taking into account the height of the side wall of the cartridge shutter, the vertical separation distance between the clamper and the spindle motor should be greater than or equal to the height of the side wall of the cartridge shutter (8 mm). In a personal computer (PC), the sidewall height of the disk driver is limited to 41.5 mm. In the case of loading a bare disk, the vertical separation distance between the clamper and the spindle motor is spaced apart only by considering the sidewall height of the optical disk. On the other hand, when loading a cartridge mounted with an optical disk, the space between the clamper and the spindle motor in consideration of the side wall height (8 mm) of the cartridge shutter is limited to the space in another part of the space in the inner space of the limited disk driver. Gives you constraints For this reason, space design is impeded in the design of the disk driver, and in the development of a driver for a portable optical disk, it becomes a factor that hinders the thinning of the driver. This limitation in space utilization is due to the opening completion point of the shutter being the rod completion point in which the inner diameter of the optical disc is located at the center of the clamper and the spindle motor. As a method of loading an optical disk, the optical disk is largely mounted in a tray so that the optical disk is mounted on a turn-table of a spindle motor, without a tray loading method and a tray. There is an insert that pushes directly from the outside to the load completion point.

In the tray load method, a structure of a cartridge in which an optical disc is used will be described with reference to FIG. 1.

1 is a view illustrating a cartridge in which an optical disc is used.

Referring to FIG. 1, the cartridge 20 mounted with the optical disc 22 includes a shutter 24 which is horizontally moved. When the shutter 24 of the cartridge 20 is not loaded into the driver for the optical disk, the shutter is closed as shown in Fig. 1A to protect the information recording surface of the optical disk 22 actually inside.

Referring to FIG. 1 (B), when the optical disc 22 is loaded into the optical disc driver, the shutter is opened by a shutter opener (not shown) installed in the main body of the optical disc driver, and the information recording surface of the optical disc 22 is opened. Expose Referring to FIG. 1C, a longitudinal cross-sectional view taken along line A of FIG. 1B of the cartridge 20 in which the optical disc 22 is actually present when the shutter 24 is opened is shown. The time point when the cartridge 20 on which the optical disc 22 is mounted reaches the center of the spindle motor (not shown) is in a state of completion of loading. In the load completion state, a central portion of the spindle motor (not shown) is inserted into the inner diameter of the optical disk from below. In addition, a clamper (not shown) that incorporates a sintered magnet to generate a clamping force is lowered from above. The lowered clamper seats the optical disk 22 on the turn-table of the spindle motor by the magnetic force to be attached to the spindle motor.

2 is a view for explaining the case where the cartridge is mounted in a tray.

2 (A) and 2 (B), the tray 10 includes a mounting portion 10a capable of mounting a cartridge 20 on which a bare disk or an optical disk 22 is mounted.

The tray 10 further includes a U-shape 10b to expose the optical disk 22 and the spindle motor and the optical pickup device in the loaded state. In detail, the U-shaped groove allows the optical disk 22 to be seated on the turntable of the spindle motor (not shown) in the state where the tray 10 is inserted into the main body 100 and the load is completed. The light beam can be irradiated onto the recording surface. A cartridge 20 in which a bare disk (optical disk without cartridges) or an optical disk 22 is mounted by a user in an ejected state in which the mounting portion 10a of the tray 10 is exposed to the outside of the disk driver main body 100. ) Is mounted. When the cartridge 20 having the optical disk 22 mounted thereon is mounted in the mounting portion 10a, the clamper and the spindle motor in the main body 100 are in a load process in which the tray 10 is inserted into the main body 100. The gaps must be sufficiently spaced therebetween so as not to interfere with the height (8 mm) of the shutter 24 of the cartridge 20 to be inserted.

3 is a longitudinal sectional view of a conventional optical disk driver for explaining the separation distance between the clamper and the spindle motor.

Referring to FIG. 3, a conventional driver for an optical disc includes a tray 10 for loading a cartridge 20 in which an optical disc 22 is actually inserted into a main body, and a height greater than or equal to a sidewall of a cartridge shutter 24 inserted into the main body 100. And a clamper 30 and a spindle motor 40 positioned so as not to interfere with the shutter at an interval, and an optical pickup device 50 for irradiating a light beam to the information recording surface of the optical disc.

The spindle motor 40 and the optical pickup device 50 are positioned below the main body 100 so that the inner diameter of the optical disc 22 is raised when located at the central portion 42 of the spindle motor 40. To this end, the driver for the optical disc further includes a sled base 52 to support the spindle motor 40 and the optical pickup device 50 from below. The sled base 52 ascends in the rod completed state so that the central portion 42 of the spindle motor 40 is inserted into the inner diameter of the optical disk 22 and the optical disk (on the turntable 44 of the spindle motor 40). 22) to be seated. Looking at the configuration of the central portion 42 of the spindle motor 40, it is composed of a clamping yoke (not shown) and a rotating body (Centercone) made of a magnetic material of the steel system. Therefore, the clamper 30 incorporating the sintered magnet has the optical disc 22 on the turntable 44 of the spindle motor 40 by the magnetic force to be attached to the central portion 42 of the spindle motor 40. ) Closely. And in the eject (Eject) state in which the tray 10 is exposed to the outside of the main body 100, the sled base 52 is rotated so that the center portion 42 of the spindle motor 40 does not interfere with the cartridge 20 is ejected Descends to the center. An area occupied by the relatively bulky clamper 30, the spindle motor 40, and the optical pickup device 50 is located at the center of the main body. This area corresponds to the area occupied by the shutter 24 of the cartridge 20 loaded by the tray 10. And the vertical separation distance between the clamper 30 and the spindle motor center 42 is determined by the height of the side wall of the cartridge shutter 24 according to the rod pupil and eject operation. Therefore, the vertical separation distance between the clamper 30 and the spindle motor 40 is greater than or equal to the height of the sidewalls of the shutter 24 of the loaded cartridge 20 (8 mm) so as not to interfere with the shutter 24. The clamper 30 is located in the upper part of the main body 100, and when the inner diameter of the optical disc 22 comes to its center 42 in the rod completed state, the clamper 30 descends to turn the optical disc 22 to the turntable 44 of the spindle motor 40. )) To this end, the driver for the optical disc further includes a clamp holder 32. The clamp holder 32 descends in the rod completed state coupled with the clamper 30 and performs a relative rotational movement rising in the eject state 7.

In the ejected state, the separation distance L1 from the inclined lower limit surface of the clamper 30 to the inclined upper limit surface of the central portion 42 of the spindle motor 40 is the height of the side wall of the shutter 24 of the cartridge 20 mounted on the tray 10. It should be designed larger than L2 so as not to interfere with L2. Therefore, due to the vertical separation distance between the clamper 30 and the spindle motor 40, which is designed with a separation distance greater than or equal to the height L2 of the side wall of the shutter 24, the space utilization of other components within the side wall height (41.5 mm) of the main body is determined. It causes a restriction. This limitation of space utilization is fundamentally due to the completion of the opening of the shutter 24 in the loaded state. The opening start time and completion time of the shutter 24 when the cartridge 20 mounted with the optical disc 22 are loaded will be described in detail with reference to FIG. 4.

4 is a view illustrating a start point and a completion point of a conventional shutter.

Referring to Fig. 4, the conventional cartridge shutter opening device in the driver for the optical disc has a shutter opener 60 for opening the shutter 24 of the cartridge 20. As shown in Figs.

Referring to Fig. 4A, a cartridge 20 in which an optical disc 22 is mounted by a user is mounted on the tray 10. As shown in Figs. When acting on the force applied to the tray 10 in the direction of the main body 100, a loading motor (not shown) is driven so that the tray 10 follows a rail not shown on the inner wall of the main body 100. It is inserted into the body.

Referring to FIG. 4B, the tray 10 passes through the point where the central portion 42 of the spindle motor 40 is located while continuing in the main body direction. This point is also the point for the clamper 30. As the tray 10 is moved into the main body, the latch 60a of the opener 60 fixed to the main body is caught in the locking groove 24a of the shutter 24. This point in time is the start point of opening the shutter 24. The shutter opener 60 is installed on the inner upper wall of the main body 100 through the hinge 60b. To this end, the shutter opener 60 has a rotatable hinge 60b.

Referring to FIG. 4 (C), the linear movement of the tray 10 with respect to the traveling direction is continued, and the shutter opener 60 caught in the locking groove 24a of the shutter 24 rotates with the hinge 60b as the rotation axis. do. The shutter 4 is moved horizontally by adding a linear motion with respect to the main body direction of the tray 10 and a rotational motion of the shutter opener 60. Therefore, the information recording surface of the optical disc 22 mounted in the cartridge 20 starts to be exposed. When the inner diameter of the optical disc 22 reaches the central portion 42 of the spindle motor 40 by the advancing tray 10, the shutter 24 is completely opened, and thus the load completed in which the information recording surface of the optical disc 22 is exposed. Become the point. At this point the sled base 52 located below the tray 10 is raised to seat the optical disc 22 on the turntable 44 of the spindle motor 40. Then, the clamp holder 32 positioned on the tray 10 is lowered to rotate the spindle motor 40 so that the optical disk 22 is brought into close contact with the turntable 44 so that the optical disk 22 seated on the turntable 44 is stable. Rotate it. On the contrary, the ejection process of reaching the ejection state in which the cartridge 20 is completely exposed to the outside after the shutter 24 is closed and the shutter 24 is opened is performed. Is done in the reverse order. The shutter opener 60 further includes a spring 60c having a restoring force to return to the original position for the next loading process.

As described above, in the conventional cartridge shutter opening device, when the shutter opening completion point of the cartridge on which the optical disc is mounted is the loading completion point, the separation distance between the clamper and the spindle motor is greater than the height of the side wall of the shutter. The problem of giving space constraints to the space utilization was hampered.

In the conventional cartridge shutter opening device, when the shutter release completion point of the cartridge that actually uses the optical disc becomes the load completion point, the separation distance between the clamp and the spindle motor is greater than the height of the side wall of the shutter. It becomes a factor to hinder.

Accordingly, it is an object of the present invention to allow the opening of the cartridge shutter to be completed prior to the center of the clamper and spindle motor, thereby increasing the space utilization of adjacent peripheral parts by reducing the separation distance between the spindle motor and the clamper below the height of the side wall of the shutter. A pre-opening device for a cartridge shutter is provided.

Another object of the present invention is to provide a cartridge shutter pre-opening device in which the opening of the cartridge shutter is completed in advance of the center of the clamper and the spindle motor to realize a thinning in the development of a driver for a portable optical disk.

1 is a view for explaining a conventional cartridge for an optical disc.

Fig. 2 is a view for explaining the case where the cartridge shown in Fig. 1 is mounted in a tray of an optical disk driver.

3 is a longitudinal sectional view of a conventional optical disk driver for explaining the separation distance between the clamper and the spindle motor when the cartridge shown in FIG. 1 is inserted;

4 is a view for explaining the starting point and the completion time of the conventional cartridge shutter opening;

5 is a longitudinal cross-sectional view of the driver for an optical disk of the present invention for explaining the separation distance between the clamper and the spindle motor according to an embodiment of the present invention.

6 is a view for explaining the pre-opening device of the cartridge shutter according to an embodiment of the present invention.

7 is a view for explaining the pre-opening device of the cartridge shutter according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10, 70: tray 10a: mounting portion

10b: U-shaped groove 20: cartridge

22: optical disk 24: shutter

24a: locking groove 30: clamper

32: clamp holder 40: spindle motor

42: center 44: turntable

50: optical pickup device 52: sled base

60: shutter opener 60a, 72a, 82a: latch

60b: hinge 60c: spring

72, 82: shutter opener 62b: bar groove

74: shutter levers 74a to 74c: first to third hinges

82b: protrusion pin 84: guide rail

In order to achieve the above object, the cartridge shutter pre-opening device according to the present invention comprises a spindle motor for rotating the optical disk, a clamper for seating the optical disk on the spindle motor, and an optical disk to move horizontally to open the information recording surface. A cartridge having a shutter, and shutter pre-opening means for opening the shutter prior to the clamper and the spindle motor.

In addition, the cartridge shutter pre-opening device according to the present invention includes a cartridge having a spindle motor for rotating the optical disk, a clamper for seating the optical disk on the spindle motor, a shutter for positioning the optical disk horizontally and opening the information recording surface of the optical disk; And a disc loading means for loading the cartridge to an access position where the information recording surface of the optical disc is exposed and recording / reproducing, and a shutter opening portion for opening the shutter before the position of the spindle motor and the clamper.

Hereinafter, with reference to the preferred embodiment of the cartridge shutter pre-opening device according to the present invention will be described in detail.

5 is a longitudinal sectional view of the driver for an optical disc of the present invention for explaining the separation distance between the clamper and the spindle motor according to an embodiment of the present invention.

Referring to FIG. 5, the driver for an optical disk according to the present invention includes a clamper 30 and a spindle motor 40 that are greater than or equal to the vertical separation distance between the clamper 30 and the spindle motor 40 and the sidewall height of the optical disk 22. do.

In FIG. 5, parts having the same function and structure as in FIG. 3 are denoted by the same reference numerals and detailed description thereof will be omitted.

In the eject state, the clamper 30 and the spindle motor 40 located in the center of the main body 100 have the vertical distance between them to be equal to or greater than the sidewall height of the optical disk 22, so that the cartridge shutter 24 Side wall height is not taken into account. The vertical separation distance L3 from the inclined lower limit surface of the clamper 30 located in the upper part of the main body 100 to the inclined upper limit surface of the spindle motor center 42 located in the axle is equal to or greater than the side wall height L4 of the optical disk 22. . The tray 10 on which the cartridge 20 on which the optical disk 22 is mounted is inserted is inserted into the main body, and at the same time as the cartridge shutter 24 is opened, the tray 10 proceeds and the shutter of the cartridge 20 ( 24 is fully open ahead of the center of the clamper 30 and spindle motor 40. Therefore, the clamper 30 and the central portion 42 of the spindle motor 40 having a distance greater than or equal to the side wall height L4 of the optical disk 22 do not interfere with the optical disk 22 loaded on them at a vertical height. When the loading of the optical disc 22 is completed, the sled base 52 is raised and the clamp holder 32 is lowered so that the clamper 30 is caused by magnetic force to be attached to the central portion 42 of the spindle motor 40. The optical disc 22 is seated on the turntable 44 of the spindle motor 40.

At the time of the eject process (the disc loading process becomes the completion point of the disk loading) of ejecting the cartridge 20, which is the optical disk 22, to the outside of the main body 100, the clamp holder 32 is raised and the sling The red base 52 is lowered so that the optical disk 22 is separated on the turntable 44 of the spindle motor 40. At this time, the distance L3 from the lower slope of the clamper 30 to the central portion 42 of the spindle motor 40 is increased until the height L4 of the side wall of the optical disk 22 is equal to or greater than that. As a result, in the optical disk driver according to the present invention, unlike the conventional optical disk driver, the separation distance from the lower surface of the clamper 30 to the upper surface of the inclined upper surface of the spindle motor center 42 is the height of the side wall of the optical disk 22. If more than enough. This is due to the fact that when the cartridge 20 mounted with the optical disk 22 is loaded into the main body 100, the opening completion point of the shutter 24 precedes the center portion 42 of the clamper 30 and the spindle motor 40. do. This will be described in detail with reference to FIGS. 6 and 7 according to an embodiment of the present invention.

6 is a view for explaining the pre-opening device of the cartridge shutter according to an embodiment of the present invention.

Referring to FIG. 6, a cartridge shutter pre-opening apparatus according to the present invention includes a tray 70 on which an optical disc 22 is mounted, and a shutter opener 72 for horizontally moving and opening the shutter 24 of the cartridge 20. And a guide portion 76 fixedly installed inside the main body 100 and a shutter lever 74 positioned on the tray 70 and positioned between the shutter opener 72 and the guide portion 76.

A rotatable first hinge 74a is connected to the rod-shaped groove 72b so that the shutter opener 72 is coupled to the shutter lever 74. The shutter lever 74 is provided on the tray 70 through the second hinge 74b. Then, the shutter lever 74 proceeds along the guide portion 76 installed in the main body 100 through the third hinge point 74c.

Referring to FIG. 6A, which shows an eject state in which the tray 70 is exposed to the outside, a cartridge 20 in which the optical disc 22 is mounted is mounted on the tray 70. At the same time, the latch 72a of the shutter opener 72 is caught by the locking groove 24a of the shutter 24 to become the start point of opening the shutter 24. When a force applied in the direction of the main body 100 acts on the tray 70, a loading motor (not shown) is driven so that the tray 70 follows a rail not shown on the inner wall of the main body 100. It is inserted into the body 100. In addition, the second hinge 74b provided on the tray 70 moves linearly along the linear motion of the tray 70. The shutter lever 74 rotates the third hinge 74c connected to the guide portion 76 fixedly installed to the main body 100 in the linear motion of the second hinge 74b in the counterclockwise direction and rotates the first hinge. The 74a moves vertically along the bar groove 72b and rotates counterclockwise. Therefore, the shutter lever 74 rotates counterclockwise along with a linear motion about the second hinge 74b. The shutter opener 72 coupled to the shutter lever 74 through the first hinge 74a adds a rotational movement of the shutter lever 74 and a linear movement of the tray 70 to the shutter 24 of the cartridge 20. Is moved horizontally to the left to start exposing the information recording surface of the optical disc 22. To this end, the first to third hinges 74a to 74c are made of rotatable hinges.

Referring to FIG. 6 (B) illustrating the opening completion point of the shutter 24, the guide surface of the guide portion 76 has a straight line of the tray 70 at the third hinge 74C. A plane parallel to the direction of motion is reached. At this time, the shutter 24 is completely opened to expose the information recording surface of the optical disc 22. The tray 70 begins to pass through the point where the central portion 42 of the spindle motor 40 is located. The point where the spindle motor 40 is located is the point where the clamper 30 is positioned with the air layer therebetween. The shutter lever 74 and the shutter opener 72 connected about the first to third hinges 74a to 74c along the side of the guide portion 76 parallel to the travel direction of the tray 70 may include a shutter 24. Continue linear movement in the direction of the main body while moving horizontally to the left.

Referring to FIG. 6C showing the loading completion point of the tray 70 on which the cartridge 20 is mounted with the shutter 24 completely horizontally moved to the left side, the tray 70 proceeds to the main body 100. When the inner diameter of the optical disc 22 reaches the central portion 42 of the spindle motor 40, the sled base 52 located below the inside of the main body 100 rises to raise the optical disc 22 to the spindle motor 40. It is seated on the turntable 44 of. Then, the clamp holder 32 located above the inside of the main body 100 descends to bring the optical disk 22 into close contact with the turntable 44 so that the spindle motor 40 rotates and the optical disk seated on the turntable 44 ( 22) Rotate stably.

In contrast to the disk load process described above, the eject process is performed in the reverse order of the load process. Since the shutter opener 72 and the shutter lever 74 have to return to their original positions after reaching the ejected state, the shutter opener 72 and the shutter lever 74 must further include a member having a restoring force such as a spring. As a result, the shutter 24 is completely horizontally moved to the left in front of the center 42 of the clamper 30 and the spindle motor 40 so that the center of the spindle motor 40 of the spindle motor 40 at the lower slope of the clamper 30 is lowered. The height L3 up to the inclined upper limit surface can be set to a separation distance equal to or greater than the sidewall height L4 of the optical disk 22.

7 is a view for explaining the pre-opening device of the cartridge shutter according to another embodiment of the present invention.

7, the pre-opening device of the cartridge shutter according to the present invention includes a tray 70 on which the optical disc 22 is mounted, a shutter opener 82 for horizontally moving the shutter 24 of the cartridge 20, The guide rail 84 is fixedly installed in the main body 100.

The shutter opener 82 has a rotatable protrusion pin 82b. In addition, the guide rail 84 is fitted to the shutter opener 82, so that the guide rail 84 may travel along the guide rail 84. In addition, the shutter opener 82 may move horizontally installed on the tray 70.

Referring to FIG. 7A showing an eject state in which the tray 70 is exposed to the outside, a cartridge 20 on which the optical disc 22 is mounted is mounted on the tray 70. At the same time, the latch 82a of the shutter opener 82 is caught by the catching groove 24a of the shutter 24 to become the start point of opening the shutter 24. When a force applied in the direction of the main body 100 acts on the tray 70, a loading motor (not shown) is driven so that the tray 70 follows a rail not shown installed on the inner wall of the main body 100. It is inserted into the body 100. In addition, the projection piece 82b of the shutter opener 82 moves along the guide rail 84 fixed to the main body 100. For this purpose, the protrusion pin 82b is rotatably installed in the shutter opener 82. Therefore, the shutter opener 82 coupled with the protrusion pin 82b horizontally moves the shutter 24 of the cartridge 20 to the side due to the vertical movement of the tray 70 and the traveling direction of the guide rail 84 bent to the left. It moves to start exposing only the information record of the optical disc 22.

Referring to FIG. 7B showing the opening completion point of the shutter 24, the tray 70 continues linear movement to the main body 100, and the guide rail 84 parallel to the traveling direction of the tray 70 is provided. Reach the turning direction of. At this point, according to the linear movement of the tray 70 to the main body 100 and the advancing direction of the guide rail 84 coupled with the protrusion pin 82b, the shutter opener 82 is completely horizontal to the left of the shutter 24. Move it. Thus, the information recording surface of the optical disc 22 is exposed. At this time, the tray 70 starts to pass through the point where the central portion 42 of the spindle motor 40 is located. The magnetic point where the spindle motor 40 is located is also the point where the clamper 30 is positioned with the air layer therebetween. Along the guide rail 84 parallel to the advancing direction of the tray 70, the protrusion pin 82b continues the linear motion. Accordingly, the shutter opener 82 continues the linear movement in the main body direction while horizontally moving the shutter 24 to the left.

Referring to FIG. 7C showing the loading completion point of the tray 70 on which the cartridge 20 is mounted with the shutter 24 completely horizontally moved to the left, the tray 70 continues the linear movement in the advancing direction. And the shutter opener 82 moves the shutter 24 completely to the left along the parallel guide rail 84. Accordingly, when the inner diameter of the optical disk 22 reaches the central portion 42 of the spindle motor 40, the rod completion time is reached, and the sled base 52 located below the inside of the main body 100 is raised to raise the spindle motor ( The optical disk 22 is seated on the turntable 44 of 40. Then, the clamp holder 32 located above the inside of the main body 100 descends to bring the optical disk 22 into close contact with the turntable 44.

The eject process is performed in the reverse order of the above-described load process. The protruding pin 82b of the shutter opener 82 is returned to its original position along the guide rail 84 in the ejection operation of the tray 70, and thus does not need to have a restoring force. As a result, the shutter 24 is completely horizontally moved to the left before the clamper 30 and the spindle motor 40 center 42 so that the inclination of the spindle motor 40 center 42 at the lower slope of the clamper 30 is inclined. It is possible for the height L3 to the upper limit surface to have a separation distance equal to or greater than the sidewall height L4 of the optical disk 22.

As described above, in the cartridge shutter pre-opening device according to the present invention, when the shutter opening completion time of the cartridge is made before the center of the spindle motor and the position of the clamper, the separation distance between the spindle motor and the clamper is less than or equal to the height of the side wall of the shutter. By reducing this, the space utilization of adjacent peripheral parts can be increased.

In addition, the cartridge shutter pre-opening device according to the present invention can realize a thinning in the development of a driver for a portable optical disc, since the cartridge shutter opening completion point is made before the center of the spindle motor and the point where the clamper is located.

The pre-opening apparatus of the cartridge shutter according to the embodiment of the present invention described above is not limited to the tray loading method but may be applied to an insertion type.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (11)

In the driver for an optical disc, A spindle motor for rotating the optical disc, A clamper for seating the optical disk on the spindle motor; A cartridge mounted with the optical disc and horizontally moved, the cartridge having a shutter to open the information recording surface of the optical disc; And a shutter pre-opening means for opening the shutter in front of the clamper and the spindle motor. The method of claim 1, The vertical separation distance from the upper limit surface of the spindle motor to the lower limit surface of the clamper is less than the height of the side wall of the shutter, the pre-opening device of the cartridge shutter. In the driver for an optical disc, A spindle motor for rotating the optical disc, A clamper for seating the optical disk on the spindle motor; A cartridge mounted with the optical disc and horizontally moved, the cartridge having a shutter to open the information recording surface of the optical disc; Disc loading means for loading the cartridge to an access position where the information recording surface of the optical disc is exposed and recorded / reproduced; And a shutter opening for opening the shutter before the position of the spindle motor and the clamper. The method of claim 3, The shutter opening portion is first guide means fixedly installed in the driver for the optical disk, Relay means positioned in the disk rod means for rotating and linear movement by the first guide means; And a first shutter opening means for opening the shutter before the position of the spindle motor and the clamper by the rotational movement of the relay means. The method of claim 4, wherein The first guide means has a guide surface perpendicular to the traveling direction of the disk rod means and a guide surface parallel to the traveling direction of the disk rod means, The relay means is located in the first shutter opening means of the first hinge means for horizontally moving the shutter and the second rod means and the disc rod means to form a rotation axis of the relay means and the first guide means And a third hinge means for rotating and linearly moving along the guide surface. The method of claim 5, And the shutter is opened by rotating the relay means at the corner of the third hinge as the disk rod means proceeds. The method of claim 5, The cartridge is characterized in that as the disc rod means proceeds, the third hinge keeps the shutter open by linear movement along the guide surface of the first guide means parallel to the direction of travel of the disc rod means. Pre-opening device of the shutter. The method of claim 4, wherein And said first shutter opening means and said relay means further comprise restoring means for returning to a position at the time of starting the load. The method of claim 3, The shutter opening part includes second guide means fixedly installed in the driver for the optical disc; And a second shutter opening means positioned in said disk rod means and opening said shutter prior to said spindle motor and said clamper. The method of claim 9, The second guide means is made of a path parallel to the path inclined with respect to the traveling direction of the disk rod means, And the second shutter opening means is horizontally moved along the inclined path of the second guide means to open the shutter. The method of claim 9, The second shutter opening means is a cartridge shutter pre-opening device, characterized in that the opening of the shutter is maintained by performing a vertical movement parallel to the traveling direction of the disk rod means along the parallel path of the second guide means. .